Novel salicylaldehyde derivatives as fluorescence turn-on sensors for cyanide ion

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Author listNiamnont N., Khumsri A., Promchat A., Tumcharern G., Sukwattanasinitt M.

PublisherElsevier

Publication year2014

JournalJournal of Hazardous Materials (0304-3894)

Volume number280

Start page458

End page463

Number of pages6

ISSN0304-3894

eISSN1873-3336

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84908005501&doi=10.1016%2fj.jhazmat.2014.08.028&partnerID=40&md5=23990eee176c5c9dcd067b7325f36696

LanguagesEnglish-Great Britain (EN-GB)


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Abstract

A novel series of fluorescent probes containing diphenylacetylene as fluorogenic units and salicylaldehyde as a CN- receptor were successfully synthesized by using sonogashira coupling. In the presence of Triton-X 100 non-ionic surfactant, the fluorophores exhibited fluorescence "turn-on" in response to CN- in aqueous media with the detection limit of 1.6μM. The turn-on signal is the result of the conversion of the aldehyde to cyanohydrin via the internal acid catalyzed addition of cyanide. Using paper sensor strips, a naked eye detection of cyanide is possible down to 5nmol. © 2014 Elsevier B.V.


Keywords

Nucleophilic additionWater analysis


Last updated on 2023-18-10 at 07:42